What watt is enough for a docking station?

[Bouncing]

I'm going to buy a docking station for my ipod, but I need one with good sound and apparantly that depends on the watts? Some arent good makes like gear4 and it says 9 watts, is that good? I listen to quite heavy music so I need clear sound :P

[N!ck]

How much do you want to spend?

[Bouncing]

No more than 50 pounds